Only room for one in this bed

Welp, I managed to pull a major boner and trash a p-flat build plate on its first use in the process.

In my exuberance to print a holographic pattern I carefully place the build plate in the machine, and did a bed level - got the green light!

Started a print, and immediately there were LOUD NOISES and there was nothing coming out of the extruder and I could see the nozzle buried in the plate.

Stupid me had somehow forgotten TO REMOVE THE CURRENT BUILD PLATE from the machine. So turns out double-stacking them is less than optimal. Weird.

(expensive) lesson learned.

DOH!